The load-velocity relationship in the jump squat exercise
Deutscher übersetzter Titel: | Die Belastungs-Geschwindigkeits-Beziehung bei der Jump-Squat-Übung |
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Autor: | Loturco, Irineu; McGuigan, Michael R.; Pereira, Lucas A.; Pareja-Blanco, Fernando |
Erschienen in: | Biology of sport |
Veröffentlicht: | 40 (2023), 2, S. 611-614, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0860-021X, 2083-1862 |
DOI: | 10.5114/biolsport.2023.118019 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU202307005470 |
Quelle: | BISp |
Abstract des Autors
The purpose of this study was to test the load-velocity relationship in the jump squat (JS) exercise using three different velocity parameters (mean velocity [MV], mean propulsive velocity [MPV], and peak velocity [PV]). Twenty-six male rugby union players (24.3 ± 3.9 years; 1.81 ± 0.09 m; 101.3 ± 15.4 kg) performed a progressive loading test in the JS with loads corresponding to 20, 40, 60, and 80% of the half-squat 1RM (equivalent to 24, 46, 70, and 94% of the estimated JS-1RM). MV, MPV, and PV were continuously recorded during all attempts using a linear velocity transducer. Linear regression models were used to determine the relationships between JS loads and MV, MPV, and PV. Bar-velocity outputs demonstrated high levels of consistency and reliability (coefficient of variation ≤ 5% and intraclass correlation coefficient ≥ 0.90). The predictive power of MV, MPV, and PV were ≥ 91%, for all tested variables (P < 0.0001). The equations and bar-velocity values provided in this study can be used by coaches to precisely determine and prescribe JS training loads, from verylight to heavy loading conditions (i.e., ~20–100% JS 1RM).